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Renesas RD24SL-T1-AT
- Part No.:
- RD24SL-T1-AT
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
RD24SL-T1-AT.pdf
- Description:
- DIODE ZENER 2-SUPER MINI MOLD
- Quantity:
- Payment:
- Shipping:
Inventory:45,000
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Product details
Overview
RD24SL-T1-AT from Renesas Electronics is a 2-pin Super Mini Mold surface-mount zener diode with a nominal zener voltage of 23.8 V (typical), 200 mW power dissipation, and low-noise sharp breakdown characteristics. It operates as a precision voltage reference or surge absorber in audio equipment, instrumentation circuits, and constant-voltage regulation stages.
For engineers reviewing the RD24SL-T1-AT datasheet, RD24SL-T1-AT pinout, RD24SL-T1-AT application, or RD24SL-T1-AT equivalent, key selection criteria include its 22.42–25.17 V zener voltage tolerance (Class N), 120 Ω dynamic impedance at 0.5 mA test current, 0.1 µA reverse leakage at 19 V, and suitability for low-power clipping and stabilization in compact PCB layouts.
Technical Context
This device belongs to the RD4.7SL–RD39SL series of silicon planar zener diodes fabricated using diffusion process technology. Its sharp breakdown characteristic and low noise stem from optimized junction design and tight process control, enabling stable operation under low-current bias conditions (Iz = 0.5 mA).
The RD24SL-T1-AT exhibits a positive zener voltage temperature coefficient (~+12 mV/°C at ~24 V), consistent with mid-to-high voltage zener devices. Its transient thermal impedance is 625°C/W (PCB-mounted, 30×30×1.6 mm glass epoxy), supporting short-pulse surge handling up to 2.2 W for 10 µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 22.42–25.17 V at Iz = 0.5 mA - defines usable regulation range under standard test condition |
| Power Dissipation (P) | 200 mW at TA = 25°C - limits continuous DC power in ambient air; derates linearly above 25°C |
| Dynamic Impedance (Zz) | 120 Ω max at Iz = 0.5 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | 0.1 µA max at VR = 19 V - ensures minimal quiescent current in high-impedance bias networks |
| Junction Temperature (Tj) | 150°C max - sets upper thermal limit for reliable long-term operation |
| Package | Super Mini Mold (SOD-323) - 1.25×0.9 mm footprint, cathode-marked, surface-mount compatible |
Pinout & Package
RD24SL-T1-AT uses a 2-terminal SOD-323 package with cathode indicated by a band on one end. The device has no internal circuitry beyond the PN junction; terminals are unidirectional and non-polarized except for cathode/anode orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower potential side in reverse-biased zener configuration |
| Cathode | Zener breakdown terminal | Marked end; connected to higher potential side during regulation or clamping |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | Minimizes audible hiss and signal distortion in audio bias and reference paths |
| Sharp breakdown knee | Enables precise voltage clamping with minimal overvoltage excursion during transients |
| E24-standard zener voltage grading | Supports standardized BOM management and interchangeability within ±5% tolerance bands |
| 200 mW rated dissipation in SOD-323 | Delivers higher power density than standard SOD-123 or DO-35 equivalents in same footprint |
Applications
| Audio Equipment Biasing | Instrumentation Reference |
|---|---|
|
Use Scenario: Providing stable bias voltage for op-amp input stages and transistor amplifiers in portable audio mixers. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference node voltage. Use Value: Maintains <±10 mV drift over temperature due to predictable 24 V nominal regulation and low Zz. |
Use Scenario: Generating fixed reference points in multimeter front-end attenuators and ADC reference dividers. IC Role / Device Role / Timing Role: Passive voltage clamp and calibration reference element in analog signal conditioning chains. Use Value: Enables repeatable 24 V reference with <0.1 µA leakage, minimizing loading error on high-Z divider networks. |
| Waveform Clipping | Surge Absorption |
|
Use Scenario: Limiting peak amplitude of AC-coupled sensor signals before digitization in data acquisition modules. IC Role / Device Role / Timing Role: Bidirectional clamping device (with series resistor) limiting signal swing to ±24 V envelope. Use Value: Sharp breakdown ensures clean clipping threshold without soft saturation or overshoot artifacts. |
Use Scenario: Protecting I/O pins of microcontrollers and interface ICs against ESD and line surges in industrial sensors. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing short-duration energy spikes up to 2.2 W (10 µs pulse). Use Value: Withstands repetitive 19 V reverse stress and handles 2.2 W non-repetitive surges per Fig. 8, extending system robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24LT1G | Zener voltage 22.8–25.2 V (±5%), 300 mW rating, SOT-23 package, 100 Ω Zz @ 5 mA | Higher test current (5 mA vs. 0.5 mA) yields lower Zz but requires greater bias current; larger footprint | Select when higher power margin or lower dynamic impedance at higher current is required |
| MMSZ4686T1G | Zener voltage 22.8–25.2 V (±5%), 500 mW rating, SOD-123 package, 110 Ω Zz @ 1 mA | Higher Pd (500 mW) and different thermal profile; larger 2.7×1.6 mm body increases board area use | Select when sustained power dissipation >200 mW or legacy SOD-123 layout compatibility is needed |
Compared with BZX84-C24LT1G and MMSZ4686T1G, RD24SL-T1-AT offers tighter low-current regulation (0.5 mA test point), smaller SOD-323 footprint, and documented low-noise performance-making it preferable for space-constrained, battery-powered, or audio-sensitive designs where minimal bias current and signal integrity are critical.
Availability
RD24SL-T1-AT is available at Aetrix Electronics and suitable for audio equipment, instrumentation circuits, and waveform clipping applications requiring stable component supply, long-lifecycle support, and RoHS-compliant passive components.
Supply support for RD24SL-T1-AT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and discrete power devices.
The RD24SL-T1-AT belongs to Renesas' legacy zener diode product line designed for precision voltage reference and protection in consumer and industrial electronics, emphasizing low noise, sharp breakdown, and compact packaging.
FAQ
What is the zener voltage tolerance of RD24SL-T1-AT?
The RD24SL-T1-AT has a zener voltage range of 22.42 V to 25.17 V at 0.5 mA test current (Class N), corresponding to ±5.6% tolerance around the nominal 23.8 V value. This grading follows E24 standard increments and is verified per Renesas Data Sheet D11445EJ3V0DS.
Is RD24SL-T1-AT RoHS compliant?
Yes, RD24SL-T1-AT is RoHS compliant per EU Directive 2011/65/EU. Renesas confirms lead-free termination and halogen-free molding compound in accordance with its environmental compliance documentation published on renesas.com.
What is the maximum reverse leakage current for RD24SL-T1-AT?
The maximum reverse leakage current (IR) for RD24SL-T1-AT is 0.1 µA at VR = 19 V and TA = 25°C, as specified in the Electrical Characteristics table of the official datasheet. This low leakage supports high-impedance reference networks without significant error.
Can RD24SL-T1-AT be used in surge protection circuits?
Yes, RD24SL-T1-AT supports non-repetitive surge absorption up to 2.2 W for 10 µs pulses (PRSM), as shown in Figure 8 of the datasheet. It is commonly deployed as a secondary clamp in I/O protection networks where fast response and low capacitance are required.
What is the thermal resistance of RD24SL-T1-AT on a standard PCB?
RD24SL-T1-AT has a transient thermal impedance (Zth) of 625°C/W when mounted on a 30×30×1.6 mm glass epoxy PCB, per Figure 7 in the datasheet. This value applies to short-duration pulses; steady-state θJA is not specified but is estimated >400°C/W based on package size and construction.
RD24SL-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Super Mini Mold
RD24SL-T1-AT FAQ
1.How can I place an order for RD24SL-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for RD24SL-T1-AT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RD24SL-T1-AT reliable?
The price and inventory of RD24SL-T1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD24SL-T1-AT is usually 5 days.
3.What payment methods are accepted for RD24SL-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD24SL-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD24SL-T1-AT?
RD24SL-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD24SL-T1-AT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RD24SL-T1-AT?
For technical support, including RD24SL-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD24SL-T1-AT requirements.
6.How does Aetrix verify that RD24SL-T1-AT is sourced from the original manufacturer or authorized distributors?
All RD24SL-T1-AT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RD24SL-T1-AT meets industry standards.
7.What is the process for return or replacement of RD24SL-T1-AT?
All RD24SL-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with RD24SL-T1-AT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RD24SL-T1-AT part is unused and in its original packaging.
Return procedure for RD24SL-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD24SL-T1-AT Tags
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